Looking for a FAST 24/7 Emergency Room Near You? Plano ER is Your #1 Choice When Seconds Count. We're Open 24/7, with caring ER-trained physicians, Fully Equipped with the Best On-Site Medical Technologies. Plano ER is a full-service Emergency Room Open 24/7 in Plano, Texas, near Frisco and Allen. We are located at 7940 Custer Road with a team of Caring Emergency Trained Physicians and First-Class On-Site Medical Technologies Open 24/7. Never Wait in Line Again! Emergencies Can Happen At Any Time. It's Good to Know Where to Go. Plano ER is OPEN when Urgent Cares are closed. We're FAST, seconds matter. #PlanoERCares About YOU 24/7.